Realty Income focused on making international acquisitions during the first quarter. Diversification has been a key focus of Realty Income (O -0.78%) in recent years. The real estate investment trust (REIT) has been broadening its portfolio beyond its core retail focus to include industrial, gaming, data centers, and other properties. It has also expanded its geographic reach beyond the U.S. by moving deeper into Europe. That diversification strategy is paying dividends. It enables the REIT to find compelli ...